In VMK, players could chat and play together in a virtual version of Disneyland.

The game was developed by Sulake Corporation with Macromedia Shockwave.

A new player began the game by registering an account at VMK.com. The player then set up a character (an avatar) and selected the character's gender and appearance (shirt, shoes, pants, hair, hat, face, and colors for skin and hair). The player typed in a name, but until the VMK staff approved the name they requested, their name would be Guest, followed by the number of player that they are (E.x. Guest7402548). If the name was not approved the VMK staff would let them create another name.

A player could also choose from a list of randomly-selected adjective-adjective-noun names presented to him or her; if he chose one of these names, it required no approval from VMK staff.

The player also selected a "guest room", his or her own themed area which could be decorated with furniture, posters, game items, or other material. One room was provided for free, and additional rooms could be purchased later with in-game credits.

The player could enter a few lines of text, known as a "(signature)", which would be displayed in the character's publicly-visible profile. The character was then given a few tradeable items (mostly T-shirts), and was placed in the game.

The Haunted Mansion: Catch more ghosts then the other team and receive credits for each one caught.

Tomorrowland Arcade

Airlock Escape: Similar to the Sega Dreamcast game Chu Chu Rocket!, players must help a diver get through a series of obstacles. If a player completes all 15 levels, they win a diving suit, but without the matching helmet.